I just checked a 16ga action I was planning to build a 9.3x74 DR on this winter. The cross bolt is .012 smaller in dia. than the rib hole, this action however has a small dolls head alsoand is still tight.

How important is the fit of the underlugs for the strenght of the action?
It would seem that if you repin the action you would take the underlugs off face.

If your pin has bent or worn might it be that your action has just seated its self, underlugs
now tight to action maybe cross bolt now touching rib. If so (and the bolt is tight) would you be better off leaving the action as is and letting you new barrels extend to the face of the action?
I think that Metalguy is planing a DR with action.

Just wondering.